What is required to modify when using 407C and 404A as drop-in for R-22 - Page 2
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  1. #14
    Join Date
    Jul 2006
    im finding once you lay the price for a r22 recharge on them they become more interesed in a410 system
    We really need change now

  2. #15
    Join Date
    Jan 2004
    Lancaster PA
    Quote Originally Posted by mofotech View Post
    What type of refrigeration application? And also when you say comfort cooling , you mean just plain AC units ? Thanks for the replies.
    Yeah, comfort cooling is A/C.

    R404A ca be used for med or low temp refrigeration(coolers/freezers).
    Contractor locator map


    How many times must one fix something before it is fixed?

  3. #16
    Join Date
    Mar 2009
    Agreed with beenthere, 404 is a great medium and low temp refrigerant. Never even considered it as a comfort cooling refrigerant. The only ones I can think of that do dual duty (ac and small refrigeration) that still get used a lot are 22 and 134a.

  4. #17
    Don't do it. Not a recommended refrigerant for use with an R-22 system.

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